[PATCH V2 6/8] bpf: adjust GCC testsuite to eBPF limitations

[jose.marchesi@oracle.com]

    >     It also seems like rather than checking for ebpf on files with large
    >     stacks, we should be using the generic mechanisms to defined the allowed
    >     size of the stack (mentioned in prior review) & mark test which use too
    >     much space.  This would almost certainly help other embedded targets as
    >     well.
    >     
    > I first thought about doing that, but hesitated when I realized it would
    > require to alter existing tests in no trivial ways: will the test still
    > effectively test whatever it is supposed to test, after the size of an
    > array is changed, for example?
    I think you just add something like
    
    /* dg-require-stack-size "<size>" */
    
    Assuming that's right you don't have to worry about changing the test
    itself and potentially changing its meaning.
    
    I wouldn't necessarily try to figure the exact size needed by each test.
     A reasonable guesstimation ought to be sufficient.

Oh nice, I didn't know about that directive.
Thanks!